{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x52d1f9454c7f1b43d92dbfb58165ac91017784a261a1b11df939abb23b86ce8d",
    "signature": "0x97f788b60521de24aa5230b7055a5534d0ed0ad646b4f9dae493c9ef5bd26d8f738967d579225b9d3bb2275e78d4ac3784ef8e52fe160188d85b0c48af3cc8681c",
    "signer": "0x6867D51E60764cD265E7aF8e4Abc08B63b75826a",
    "userId": "241870892"
  }
}